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| Categories | Tension Spring |
|---|---|
| Brand Name: | TF |
| Model Number: | TF-003 |
| Certification: | lSO9001 |
| Place of Origin: | Shenzhen, China |
| MOQ: | 1 |
| Price: | 0.01-0.50USD |
| Payment Terms: | ,T/T |
| Supply Ability: | 10000000pieces/per month |
| Delivery Time: | 3days/Start |
| Packaging Details: | Carton packaging 18*15*12cm (packaging can be customized according to customer product requirements) |
| Component Type: | Extension Spring |
| Material Supply: | Customer Specified Brand / Our Recommended Brand / Standard Grade |
| Processing Range: | Micro (OD<5mm) / Small / Medium / Custom Large |
| Key Metrics: | Load Accuracy / Service Life / Dimensional Consistency / Environmental Resistance |
| End Form: | Same Side Double Hook / Opposite Side Double Hook / One Hook One Eye / Both Ends Machined |
| Protection Requirement: | Rust Preventive Oil / VCI Paper / Vacuum Packing / Eco-Friendly Packing |
| Typical Client: | Tier 1 suppliers to multinational corporations / well-known domestic brands / startup technology companies / trading companies |
| Response Time: | 2-Hour Quotation / 24-Hour Technical Feedback / 3-7 Day Samples |
| Company Info. |
| Shenzhen TingFeng Hardware Products Co.,Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
Rapid-Iteration Extension Springs with No-Mold Cost for Prototype & Low Volume
1.Tension Spring Quick Detail
2.Tension Spring Product Description

3.Tension Spring Product Features & Advantage
Feature | Advantage to You |
Ultra-Fast Project Kick-off Process | A streamlined inquiry and contract process, along with a dedicated project contact person, ensures a smooth workflow from consultation to order placement. |
“Zero-Wait” Mold System | A library of 200+ hook types and specifications of ready-made molds covers most common needs, saving mold-making time and costs, and enabling "from drawings to samples". |
Intelligent Production Scheduling | By using an ERP/MES system to manage orders and monitor production progress in real time, you can stay informed about your order status and plan your next steps in advance. |
Emergency Response & Capacity Backup | We have dedicated production lines and material reserves to handle urgent orders, enabling us to process sudden, small-batch rush orders and solve your immediate needs. |

4. Tension Spring Product Specification
Parameter Area | Specification Description | Capability / Notes |
Quick Selection Reference | ||
Wire Diameter (d) | 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6, 0.8, 1.0, 1.2, 1.5, 2.0, 2.5, 3.0 mm | Some have semi-finished stock |
Common Mean Diameter (D) | 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25 mm | Non-standard OK |
Standard Hook Type Code | RH (Right Hand Full Loop), LH (Left Hand Full Loop), RH-HH (Right Hand Half Hook) | Drawing provided |
Performance Quick Estimate | ||
Approx. Initial Tension Range | ~10%-30% of Max. Extension Load | Depends on coiling tightness |
Rough Spring Rate Formula | R ≈ (G * d^4) / (8 * n * D^3) | For engineer reference |
Delivery Standard | ||
Sample Packaging | Small bag or blister, labeled | |
Bulk Packaging | Boxed or film-wrapped, per 1K/box | Customizable |
Minimum Delivery Quantity | No restriction, mixed types allowed |

5.Tension Spring Product Application
To cope with a rapidly changing market, we need faster springs: Consumer electronics product iterations: Springs for opening and closing new TWS earphone charging cases and camera reset springs for mobile phone pop-ups require suppliers to keep up with rapid ID design changes and market launches.
Promotional items and seasonal products: Springs for moving parts in holiday decorations and springs for toy launch mechanisms require suppliers to handle short-term order surges and rapid delivery.
R&D and prototyping stages: Prototype production in university labs and R&D centers requires extremely low minimum order quantities and extremely fast sample delivery to validate design concepts.
Aftermarket repair market: Urgently needed replacement springs for car door handles and tension springs for appliance door seals require suppliers to have stock or be able to rapidly produce small batches of replacement parts.
6. Frequently Asked Questions (FAQ)
Q: Can you handle complex custom designs and provide design
optimization suggestions?
A: Absolutely. This is our core expertise. We provide free DFM
analysis within 3-5 days, often helping clients achieve 15-30% cost
reduction through design for manufacturability.
Q: How do you ensure quality consistency and handle defect issues?
A: We implement a rigorous 4-stage QC system with 100% full
inspection. Our track record shows 99.99% qualification rate.
Q: What are your lead times and how do you handle urgent orders?
A: Standard lead times: 3-7 days for prototypes, 7-15 days for mass
production. We offer VIP prioritization cutting lead times by up to
30%.
Q: Will I get timely responses and professional support throughout
the project?
A: Yes. You get a 1v1 exclusive consultant with 1-hour initial
response commitment and 24-hour technical support.
Q: Can you provide material certifications and environmental
compliance reports?
A: Yes. We provide material certifications and environmental test
reports (RoHS, REACH compliant) upon request.
Q: How do you protect my designs and intellectual property?
A: We start with mutual NDA and implement strict mold ownership
protection and confidential data security measures.
Q: What are your payment terms and MOQ requirements?
A: We offer flexible payment terms (T/T, L/C at sight) and MOQ from
1 piece for prototyping.
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